Just remember that the V2 outputs less via rca>rca
going through the V2 manual, this is the only thing I can find that deals with what you are saying: (on specifications page)
MAXIMUM OUTPUT LEVEL:
Balanced +27 dB
Unbalanced +21 dBu
whats the difference between dB and dBu?
is this similar to the difference between "pro" and "consumer"